406 trafficator switch
Problem was that the switch would not automatically cancel. As the switch is described as a 'pnuematic indicator switch'. I wasn't sure what to find when removing, which is a little tricky on the 406. Replacement units remanufactured to Lucas 031046 were priced at £100+ on ebay.
So on stripping down I was pleasantly surprised to find a beautiful clockwork mech. with multiple gears meshing, and a aluminium vane providing the resistance on unwinding against the spring, to produce the time delay.
a good clean with fine brush and WD40 had it working easily.
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